Band 4.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 4.5 · Cambridge IELTS 12 · 2026-10-21

IELTS Writing Task 1 question

The diagram below shows how geothermal energy is used to produce electricity.

Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

Student answer (Band 4.5)

The diafram shows the how geometrical energy is used to produce electricty.This process is very useful and convinent process to produce electicty.The main source is in this whole process is water. without water this process is nothing.In this whole proce the initial stage is cold water which pomp down in damp.The lengthof dam is 4.5km.after injecting fthe cold water in geothermal plant . secondly in the Geothermal hot water is produced. . Then the hot water is transfered into the condencer . After that stream is gnerated.the is forced the the turbine to turn and produce electriciury.

then electricity is produced this is the whole process toproduce the electricity. If there is no water we cannot produce the electricty. So the main feature of this whole process is water . And the second main feature is turning rthe turbines . There are four steps to complete the whole process. Stream powered the generator and then electricity is produced.

AI examiner evaluation

Task Achievement / Task Response: Band 5.0

You identify the general subject and report several central stages: cold water is pumped underground, heated in the geothermal zone, brought back up, and used to generate electricity. The 4.5 km depth is also correctly included. However, the account is only partial and some details are unclear or inaccurate. For example, you say “the hot water is transfered into the condencer” and then “stream is gnerated,” but do not explain that the condenser produces steam, which powers the turbine; later, “Stream powered the generator” confuses the turbine and generator stages. The overview that water is the “main feature” is broad rather than a clear summary of the process. Describe the full sequence precisely and distinguish the turbine from the generator.

Coherence and Cohesion: Band 4.0

There is a basic chronological order, supported by markers such as “initial stage,” “secondly,” and “After that,” so the reader can partly follow the process. However, the response does not develop a clear overall progression: it moves from the stages to repeated comments about water, then returns to the machinery. The opening and conclusion repeat that the process produces electricity, while “There are four steps” does not match the five numbered stages shown. Several transitions are awkward or unclear, and the text is presented as one continuous block rather than being organised into an introduction/overview and a sequence of stages. Group the stages logically, use accurate links between them, and avoid repeating the same point.

Lexical Resource: Band 4.5

You use some relevant process vocabulary, including “cold water,” “geothermal,” “condenser,” “turbine,” and “produced,” which helps communicate the topic. However, the range is limited and several spelling and word-choice errors make the description difficult to read, such as “diafram,” “geometrical,” “pomp,” “condencer,” and “stream” for steam. Some phrases are also imprecise or unnatural, including “the main source is in this whole process is water” and “the length of dam” for the well’s depth. Use the diagram’s exact technical terms consistently and choose precise process verbs such as “pumped,” “heated,” “rises,” and “drives.” Proofreading spelling would also improve clarity.

Grammatical Range and Accuracy: Band 4.5

The response mainly uses short, simple statements and attempts a few longer structures, but control is weak and errors occur frequently. Examples include the malformed opening, “The diafram shows the how…,” the incomplete construction “after injecting fthe cold water…,” and “the is forced the the turbine to turn.” Sentence boundaries and punctuation are also unreliable, with fragments and repeated full stops, while capitalization after “water” is inconsistent. These problems sometimes make the relationships between stages hard to understand. Practise forming complete subject–verb sentences, for example, “Cold water is pumped down the injection well,” and connect stages with clear clauses. Check articles, verb forms, and punctuation when editing.

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